IrishREPUBLICANArmy's definitions
Standing Wave Ratio, a measure of how much radio energy sent into an antenna system is being reflected back to the transmitter
by IrishRepublicanArmy January 1, 2004
Get the SWR mug.by IrishRepublicanArmy January 25, 2004
Get the grikah mug.That portion of the ionosphere existing between approximately 160 and 400 km above the surface of the Earth, consisting of layers of increased free-electron density caused by the ionizing effect of solar radiation. Note 1: The F region reflects normal-incident frequencies at or below the critical frequency (approximately 10 MHz) and partially absorbs waves of higher frequency. Note 2: The F1 layer exists from about 160 to 250 km above the surface of the Earth and only during daylight hours. Though fairly regular in its characteristics, it is not observable everywhere or on all days. The principal reflecting layer during the summer for paths of 2,000 to 3,500 km is the F1 layer. The F1 layer has approximately 5 ´ 105 e/cm3 (free electrons per cubic centimeter) at noontime and minimum sunspot activity, and increases to roughly 2 ´ 106 e/cm3 during maximum sunspot activity. The density falls off to below 104 e/cm3 at night. Note 3: The F1 layer merges into the F2 layer at night. Note 4: The F2 layer exists from about 250 to 400 km above the surface of the Earth. The F2 layer is the principal reflecting layer for HF communications during both day and night. The horizon-limited distance for one-hop F2 propagation is usually around 4,000 km. The F2 layer has about 106 e/cm3. However, variations are usually large, irregular, and particularly pronounced during magnetic storms.
by IRISHrepublicanARMY January 3, 2004
Get the F region mug.The DX-949 is an AM/SSB CB radio.
It covers 26.965 to 27.405 but can easliy be moded to cover from 26 to 28 MHz, making it a nice freeband radio.
It covers 26.965 to 27.405 but can easliy be moded to cover from 26 to 28 MHz, making it a nice freeband radio.
by IrishRepublicanArmy December 20, 2003
Get the DX-949 mug.Cryptographic algorithm that has been registered by the National Institute of Standards and Technology and has been published as a Federal Information Processing Standard for use in protecting unclassified sensitive information or commercial information. NTIA
The US Government uses the type 3.
by IrishRepublicanArmy June 11, 2006
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by IrishRepublicanArmy October 13, 2003
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